Horseshoe.



I. ENG STROM & J. BLOOM.

HORSESHOE.

APPLICATION FILED SEPT. 22, 1911.

1,675,343, 1 Patented Oct. 14, 19 13.

2 SHEETS-SHEET 1.

ET m

. Iva/71 E7? sirom I. ENGSTROM & J. BLOOM.

HORSESHOE.

APPLICATION FILED SEPT. 22, 1 11.

1,075,343. Patented 0ct.14,1913.

2 SHEETS-SHEET 2.

v E E 5 'ilNTTED STATES PATENT @FFTQE.

IVAN ENGSTROIVI AND JOHN BLOOM, OF CHICAGO, ILLINOIS.

HORSESHOE.

Application filed September 22, 1911.

To all whom it may concern Be it known that we, IVAN ENcsrRoM and J OHNBLOOM, citizens of the United States, and residents of the city ofChicago, in the county of Cook and State of Illinois, have inventedcertain new and useful Improvements in Horseshoes; and we do herebydeclare that the following is a full, clear, and exact description ofthe same, reference being had to the accompanying drawings, and to thenumbers of reference marked thereon, which form a part of thisspecification.

Many different methods and constructions have been devised for renewingcalks on horse shoes without the necessity of removing the shoe from thehoof. These have proven as a rule, unreliable. In some instances, thecalk has been threaded into the shoe and when threaded into the shoe isfrequently sprung by the stress applied thereto in pulling and if notbroken out, attempt to remove the same usually results in breaking thethreaded portion in the shoe and making it impossible to renew the calk.In some instances, such constructions also strip the thread. Not onlyso, the stress exert-ed upon the calks is not evenly applied and whenapplied more upon one side than upon the other, it may result inloosening or unthreading the calk in the shoe and in consequence thecalks are frequently lost from the shoe and the driver is unaware of theloss until the horse may be shod.

The object of this invention is to so construct and assemble removablecalks upon horse shoes as to enable the calks to be readily removed,leaving the horse smooth shod when it is desired, and to be quicklyreturned to place whenever required and the parts thereof subjected towear renewed as may be required, thus enabling the calks to be keptsharp.

It is also an object of the invention to afford a construction wherebythe various calks are protected from stubbing, or, in other words, thestriking of the toe calk upon the pavement as the foot swings forward.

The invention consists in the matters hereinafter described and morefully pointed out and defined in the appended claim.

In the drawings: Figure l is a bottom plan view of a horse shoe providedwith removable calks embodying our invention. F 2 is a fragmentary viewlooking in the direction indicated by the arrows 22. Fig.

Specification of Letters Patent.

Patented @ct. id, 1913.

Serial No. 650,679.

3 is a sect-ion taken on line 33 of Fig. 1. Fig. 4 is a section taken online l4c of Fig. 1. Fig. 5 is an end elevation of the heel of the shoeand calk. Fig. 6 is a section on line 66of Fig. 5. Fig. 7 is a slightlymodified construction illustrating the application of our invention to aplate. Fig. 8 is a section on line 8-8 of Fig. 7. Fig. 9 is alongitudinal section of the heel calk.

As shown in said drawings: Referring first to the construction shown inFigs. 1 to 6 inclusive, 1, indicates the shoe, which conveniently may beprovided with a relatively broad fiat toe calk 2, which is recessed onits rear side to aiford a seat for the calk block .3. The shoe on itsinner side at the bend is also shaped to afford a recess to engage thelip or upwardly directed flange at, of the calk block 3, as shown inFigs. 1 to 3 inclusive. The calk block is shaped complementallytherewith of a thickness approximately corresponding with the thicknessof the flat toe calk 2, integral with the shoe so that when the shoe isnew and first applied, the same afford a continuous flat surface on theunder side the shoe. Said calk block is provided with an aperturetherethrough near its middle and front edge and inserted therein andthreaded into the shoe is .a steel screw. The calk block is provided oneach side of the screw aperture with apertures extending therethroughequi-distant from the ends. Said apertures are cylindric and ofsubstantially uniform diameter except on the inner side of the calkblock where the same are reamed out, as shown in Fig. d, to receive thehead of the removable calk 6. Said removable calks are preferably constructed with a central core 8, of hardened steel and an outerinvestment 9, of soft iron so that the natural wear of the calk servesat all times to keep the same sharp.

The heel calk is applied substantially the same as described withreference to the toe calk. In other words, a relatively broad flat heelcalk 10, integral with the shoe, is milled to afford a groove or recess11, on its front side and a corresponding recess 12, on its outer sideand fitted thereinto is the heel block 13, which is provided on theinner side with an integral flange l l, to fit within the inner side ofthe shoe, as shown in Fig. 5. One or more screws 15, are insertedthrough the heel block and threaded into the shoe to engage the same inplace and one or more calks 6, are engaged in the heel lit block asbefore described with reference to the toe calks.

In applying the calks to plates in which it may not be desirable toprovide an integral toe or heel calk, the calk block 16, for the toe isconstructed of a comparatively thin plate of metal provided with itsaperture to receive the calk 17 as shown in Fig. 8, and a recess isprovided in the shoe of sufficient depth to receive the head of the calk17, which thus assists in rigidly engaging the calk block in place.Stops or shoulders 20, integral with the shoe are provided at each sideof the toe and heel calks and extend into recesses 21, in said calks toassist the screws in preventing the slipping of the calks.

The calks may, of course, be constructed as before described withreference to the construction shown in Figs. 1 to 6. In a similar mannerthe heel block 18, is secured upon the shoe by means of the screw 19,and the heel of the shoe is provided with an aperture 20, as shown inFig. 9, to receive the head of the calk 17 thus holding the heel blockfrom turning. Of course, a suflicient thickness of metal should beprovided to protect the hoof against any possibleinjury from downwardpressure on the calk. Any number of screws may be employed in any ofsaid blocks. While we have shown but one in each, it is, of course,to'be understood that the number will vary with the necessities of thecase.

The operation is as follows: In operation, should it be desired toremove the calks, it

may be done by removing the screws, percalks to fall from the shoe. Inthis way the horse is, of course, smooth shod. The calks, however, maybe very quickly restored by inserting the calks into the calk blocks andscrewing the blocks into place 011 the shoe. Should the calks becomeworn or injured, they may be quickly renewed. All of the parts are smalland comparatively inexpensive and renewal may be effected with a moietyof the expense required to re-shoe a horse.

Of course, we do not purpose limiting this application for patentotherwise than necessitated by the prior art, for many details of theconstruction and arrangement may be varied without departing from theprinciples of this invention.

We claim as our invention:

A calk block embracing a flat plate, a lug integral therewith andextending outwardly therefrom, a horse shoe having a recess in the rearedge, an integral recessed toe calk at the forward edge, said calk blockadapted to engage within said recess, and removable calks insertedthrough said calk blocks.

In testimony whereof we have hereunto subscribed our names in thepresence of two subscribing witnesses.

IVAN ENGSTROM. JOHN BLOOM.

Witnesses:

LAWRENCE REIBsTEIN, CHARLES W. HILLS, J r.

, mitt-ing the calk blocks with the attached Copies of this patentmay beobtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0.

